Declaring an end to what he's called "the war on coal," President Donald Trump signed an executive order Tuesday that eliminates numerous restrictions on fossil fuel production, breaking with leaders across the globe who have embraced cleaner energy sources.

The order makes good on Trump's campaign pledge to unravel former President Barack Obama's efforts to curb global warming, eliminating nearly a dozen measures in an effort to boost domestic energy production, especially oil, natural gas and coal.

Environmental activists, including former Vice President Al Gore, denounced the plan. But Trump said the effort would spark "a new energy revolution" and lead to "unbelievable" American prosperity.

"That is what this is all about: bringing back our jobs, bringing back our dreams and making America wealthy again," Trump said during a signing ceremony at the Environmental Protection Agency headquarters, where he was flanked on stage by more than a dozen coal miners.